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No. 65,886. Patented Dec. I3, I898. A. E. ORMOND.

LOCK.

(Applicatiun filed June 1, 1898. (No Model.) 2 Sheets-Sheet lll II ll 1 II I I INVENTOI? ATTORNEYS.

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No. 615,886. Patented Dec. l3, I898. A. E. ORMOND.

LOCK.

(Application filed June 1, 1898.)

(No Model.) 2 Sheets-Sheet 2.

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UNITED STATES PATENT OFFICE.

ALBERT EDVARD ORMOND, OF VVINNIPEG, CANADA, ASSIGNOR OF ONE- FOURTH TO JAMES G. BENNETT, OF SAME PLACE.

LOCK.

SPECIFICATION forming part of Letters Patent No. 615,886, dated December 13, 1898.

Application filed June 1, 1898. Serial No. 682,294. (No model.)

To all whom it may concern.-

Be it knownthat I, ALBERT EDWARD OR- MOND, of Winnipeg, in the Province of Manitoba and Dominion of Canada, have invented new and useful Improvements in Locks, of which the following is a full, clear, and exact v manipulating a predetermined combination.

I will describe a lock embodying my invention and then point out the novel features in the appended claims.

Reference is to be had to the accompanying drawings,forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.

Figure l is an outside elevation of a lock embodying my invention. Fig. 2 is a transverse sectional view substantially on the line 2 2 of Fig. 4. Fig. 3 is a sectional side view, substantially on the line 3 3 of Fig. 4, with certain parts omitted. Fig. 4 is a transverse sectional view substantially on the line 4 4 in Fig. 3. Fig. 5 is a perspective View of a dog employed. Fig. 6 is a plan view show ing the connection between the inner knob and the bolt-throwing plate, and Fig. 7 is a section of one of the tumblers and its coacting parts.

The lock comprises a casing 1, designed to be secured on the inside of a door. Arranged within the casing is a shaft 2, on which tumblers 3, 4, 5, and 6 are loosely mounted, so as to rotate on said shaft. Each tumbler consists of a disk having a notch 7 at one'side. Secured to each tumbler-disk is a ratchetwheel 8, and also secured to each tumblerdisk is a heart-cam 10.

Engaging with each ratchet-wheel 8 is a push-rod 11. These push-rods extend outward through an opening inthe door, and each has a push-button or finger-piece extended through a hole in an outside plate 12. I have here designated these push-buttons or finger-pieces as a, b, d, and e. The pushrods extend through the back plate 13 of the lock-casing and also through barrels 14 on said back plate,and arranged within each barrel is a spring 15, which bears at one end against the inner wall of the barrel and at the other end against a collar on the-push-.

rod. These springs are designed to force the push-rods to their outer or normal position. Mounted to swing in the casing and designed to move into the notches of the several tumblers is a dog 16, which is mounted on horizontally-disposed arms 17, and from a pivotal point of these arms 17 arms 18 extend upward and are connected at their upper ends by a rod 19, which is also connected to a shifting-rod 20, arranged in line with the longitudinal center of the dog 16.

Engaging with each of the ratchet-wheels is a click-spring 21, the base portion of which is secured in a fixed portion of the casing,

and bearing upon each spring is an anglelever 22, the upwardly-extended member of which bears against the rod 19. for rocking the dog 16 out ofengagement with the tumbler disks, I employ a push-rod 23, which bears against the shifting-rod 20 and extends outward and has a push-button or finger-piece c on its outerend. This push- As a means rod is similar to the push-rods before de- I scribed, and it may be termed the combination-starting rod, while the others may be termed the combination-operating rods.

A knob 24 at the inner side of the door has its shank 25 extended through the front wall of the casing 1. Extended through the back plate 13 is a-shaft 26. This shaft 26 at its end within the casing has a bearing in the shank 25, as plainly indicated in Fig. 4. The shaft 26 is connected by means of a rod 27 with a knob 28 at the outer side of the door;

34 is provided with an annular channel into which the upper end of the shifting-rod passes.

Extended outward at right angles from the shank of the knob 24 is an arm 35, from which a rod 36 extends to a connection with the bolt-shifting plate 31, this connection being near its free end. By this arrangement it will be seen that the shifting-plate may be swung to move the bolt by rotating the inner knob 24 and without imparting motion to any other part of the lock. Engaging with each heart-cam is a spring-finger 37. These several spring-fingers extend downward from plates 38, secured to studs 39, extended from the back plate 13.

It will be noted that the dog 16 is held yieldingly against the periphery of the tumbler-disks by means of a spring or springs 40. It may be assumed that the tumbler operated by the inward movement of the push-button a represents units, the next one operated by the push-button 1) represents tens, the next one operated by the push-button d hundreds, and the next one operated by the push-button 6 represents thousands, giving nine thousand nine hundred and ninety-nine combinations, which of course may be increased to any number by increasing the number of tumblerdisks and their operating parts.

The combination is set in the following manner: Having decided upon a combination say 1234:-the center pusl1-button c is first pressed inward. Thismovement by pushing on the shifting-rod 20 will move the dog 16 out of engagement with the several to mbler-disks, as indicated in dotted lin es in Fig. 4. This same movement will tilt the angle-levers 22, so that the springs 37 operating on the heart-shaped cams will impart rotarym ovement to the tumbler-disks. The spring-fingers 37, that may be bearing on the curved portions of the heartshaped cams, will cause the several tumblerdisks to rotate to a zero-pointthat is, until the points of the spring-fingers engage in the notches of the heart-shaped cams. Now the changing-pin 41 (shown in Fig. 2) is inserted and the push-button a is pressed four times, the push-button Z) three times, the push-button (Z twice, and the push-button 6 once. The changing-pin 4,1 is then withdrawn and the lock is ready for use. To unlock, the pushbutton 0 is pressed once, which, as before described, moves the dog 16 out of engagement with the tumbler-disks, so that they may all be thrown to zero by means of the spring-fingers 37, as before described. The push-buttons e, (l, b, and a are pressed once, the pushon the shaft 36 and cause the projections 32 to pass into the openings in the plate 21, after which the bolt 29 may be moved by rotating the outer knob 28. After opening the door the several tumbler-disks are to be again turned to zero by pushing inward on the pushbutton 0, and upon closing the door the inner knob may be operatedto move the lockin g-bolt into its keeper.

Having thus described my invention, 1 claim as new and desire to secure by Letters Patent 1. Alock, comprising a casing, a series of notched tumbler-disks mounted to rotate on a shaft in said casing, a spring-pressed dog designed to enterinto the said notches, a pushrod for operating said dog in one direction, a ratchet-wheel on each tumbler, push-rods engaging the said ratchet-wheels, heart-cams connected to the tumblers, spring-fingers engaging the said heart-cams, a shaft having connection with a knob at the outer side of the door to which the lock may be attached, a collar mounted to rotate with but movable longitudinally on said shaft, a shifting-rod engaging with said collar and movable with a movement of the dog, a bolt, and a bolt-shifting plate adapted for locking engagement with the collar, substantially as specified.

2. A lock, comprising a casing, a bolt movable in said casing, a shifting-plate for said bolt, a shaft extended inward to the casing and through said shifting-plate, a knob for turning said shaft, a collar on said shaft and adapted to be moved into engagement with the shifting-plate, a dog operating to move the collar, and tumblers for controlling the movement of said dog, substantially as specified.

3. A lock, comprising a series of notched tumbler-disks, means for imparting a stepby-step rotary movement to said tumblerdisks, a spring-pressed dog controlled by said tumblerdisks, a bolt actuating plate, an outer knob, a clutch operated by a movement of the dog to put said outer knob in operative connection with the plate, and an inner knob having connection with said plate, whereby the bolt may be operated by rotating said inner knob, substantially as specified.

l. In a look, a series of independent notched tumbler-disks, a shaft on which said tumblerdisks are mounted to rotate, a ratchet-wheel connected to each tumbler-disk, push-rods engaging the said ratchet-wheels, a heart-cam connected to each tumbler'disk, and springfingers engaging the said heart-cams, the said fingers operating to rotate the disks by bearing on the periphery of the cams, substantially as specified.

ALBERT EDYVARD ORMOND.

it-n esses:

W. H. H. GRAHAM,

H. A. DE LONG.

IIO 

